Driving circuit for display panel

Abstract

The present application relates to a driving circuit for display panel, which drives a plurality of pixel structures of a display panel. Each of pixel structures comprises a light emitting element, which is coupled between a first voltage and a second voltage. The driving circuit comprises a power supply circuit, which is coupled to the pixel structures, provides the first voltage and the second voltage, and adjusts the first voltage or/and the second voltage for adjusting a voltage difference between the first voltage and the second voltage. That is, a current flowing through the light emitting elements of the pixel structures may be adjusted for reducing the flicker in the display panel.

1 . A driving circuit for display panel, driving a plurality of pixel structures of a display panel, each of said pixel structures including a light-emitting element coupled between a first voltage and a second voltage, said driving circuit comprising:
 a power supply circuit, coupled to said pixel structures, providing said first voltage and said second voltage, and adjusting said first voltage or/and said second voltage to adjust a voltage difference between said first voltage and said second voltage.   
     
     
         2 . The driving circuit of  claim 1 , further comprising:
 a scan driving circuit, coupled to a plurality of scan lines of said display panel, and scanning said pixel structures; and   a data driving circuit, coupled to a plurality of data lines of said display panel, generating a plurality of data signals, and transmitting said data signals to said pixel structures via said data lines to drive said pixel structures.   
     
     
         3 . The driving circuit of  claim 2 , wherein after said data driving circuit transmits said data signals to said pixel structures, said power supply circuit adjusts said voltage difference between said first voltage and said second voltage. 
     
     
         4 . The driving circuit of  claim 3 , wherein after said data driving circuit transmits said data signals to said pixel structures and before said data driving circuit transmits next plurality of data signals to said pixel structures, said power supply circuit adjusts said voltage difference between said first voltage and said second voltage for at least one time. 
     
     
         5 . The driving circuit of  claim 4 , wherein said power supply circuit adjusts said voltage difference between said first voltage and said second voltage for multiple times, and said voltage difference increases with time. 
     
     
         6 . The driving circuit of  claim 4 , wherein in a period between said data driving circuit starting to transmit said data signals to said pixel structures and said data driving circuit starting to transmit said next data signals to said pixel structures, said power supply circuit adjusts said voltage difference between said first voltage and said second voltage for every predetermined period. 
     
     
         7 . The driving circuit of  claim 1 , further comprising a timing control circuit, coupled to said power supply circuit, said timing control circuit controlling the timing of said power supply circuit adjusting said voltage difference between said first voltage and said second voltage. 
     
     
         8 . The driving circuit of  claim 1 , wherein said pixel structure further includes a transistor coupled between one terminal of said light-emitting element and said first voltage; and the other terminal of said light-emitting element is coupled to said second voltage.